Garmin.com/express is a URL that will directly take you to the page from where you can download Garmin Express software. Garmin Express Software can be downloaded from Garmin.com/express into different devices with different operating systems like Mac or Windows. Garmin Express is software that is used to maintain and manage your Garmin GPS navigational Devices. Visit the link given above to get more information about Garmin express software and ways to download it.